SPATIAL CONTROL OF GOLD MINERALIZATION IN RELATION TO LITHOLOGICAL DOMAINS AND DEGREE OF STRUCTURAL DISTURBANCE

Abstract

This study presents a domain-based analysis of the spatial distribution of gold (Au) within the Ashiktas gold deposit, based on lithological segmentation of the rock mass and assessment of its structural disturbance. Domain delineation was grounded on generalized lithological groups integrated according to their physical and mechanical properties (density and porosity), reflecting differences in the filtration and reservoir characteristics of the rocks. Using drilling data and laboratory analyses, three-dimensional geological and block models of Au distribution were constructed, along with a model of the Rock Quality Designation (RQD) index employed as a proxy indicator of fracture intensity within the rock mass. Quantitative evaluation was performed by correlating the proportion of intervals corresponding to different gold grade classes with lithological domains and RQD values. The results demonstrate that elevated gold concentrations are predominantly localized within quartz-rich zones characterized by reduced RQD values, indicating the leading role of structural reworking in gold localization. The practical significance of the study lies in the applicability of the domain approach and quantitative comparison of lithological and structural factors to enhance the reliability of ore zone prediction and to optimize further exploration planning.